Logo of Huawei is seen in front of the local offices of Huawei in Warsaw. Reuters

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AFP/Warsaw

Poland said Friday it had arrested a Chinese telecoms executive suspected of spying for China, with local media identifying him as a Huawei director.
The move is the latest setback for Huawei, which saw the arrest of the daughter of the firm's founder in Canada and US efforts to blacklist the company internationally over security concerns.
The Chinese foreign ministry told AFP it was "highly concerned" by the arrest.
Huawei said in a terse statement that it was "aware of the situation" and "looking into it".
The Polish announcement comes weeks after Canada arrested Huawei vice president Meng Wanzhou, who is accused of violating Iran sanctions.
Huawei, which was founded by a former Chinese army engineer, is also facing increased scrutiny over its alleged links to Chinese intelligence services.
Countries like the United States, Australia and Japan have blocked Huawei from building their next-generation, super-fast 5G internet networks.
In December, a Czech cyber-security agency warned against using the software and hardware of Huawei and fellow Chinese company ZTE, saying they posed a threat to state security.
A Polish man "known in the IT sector" was also arrested for alleged espionage along with the Chinese citizen "who is a businessman working for an important telecommunications firm," said Maciej Wasik, deputy head of Poland's special services, quoted by the PAP news agency.
The investigation "had been going on for a while, and had been handled with great care."
EU spokeswoman Maja Kocijancic refused to "speculate" when asked Friday if there were any concerns about Chinese retaliation.
"We are aware of the reports and we will be indeed in touch with the Polish authorities for further information," she told reporters.
The men were arrested on Tuesday and are suspected of having "worked for Chinese services and to the detriment of Poland," said Polish special services spokesman Stanislaw Zaryn.
According to local media, the Chinese businessman is believed to be a director of the Polish branch of Huawei.
Zaryn identified him as Weijing W and the Polish suspect as Piotr D.
He said their apartments and workplaces were searched, adding that the Polish suspect had worked "for several state institutions".
Polish media identified Piotr D as a former agent for Poland's ABW counter-intelligence service and current cyber-security consultant for the Polish branch of French mobile phone provider Orange.
Orange Polska spokesman Wojciech Jabczynski told AFP that "ABW officials carried out items belonging to one of our employees on Tuesday."
"We have no information as to whether this is at all related to his work duties."
The arrest comes just over a month after Canada detained Meng on a US extradition request, a move that infuriated China which warned Canada of "serious consequences".
Chinese authorities then detained two Canadians -- a former diplomat and a business consultant -- on suspicion of endangering national security.
Britain's largest mobile provider BT said last month it would remove Huawei equipment from its cellular network after the foreign intelligence service called the company a security risk.
Australia and New Zealand have also enacted similar bans, leaving Canada the only country in the "Five Eyes" intelligence network not to take steps against the Chinese firm.
Last month, a senior EU official warned that the bloc should be "worried" about Huawei and other Chinese firms.
"They have to cooperate with their intelligence services. And this is about mandatory backdoors," European Commission Vice President Andrus Ansip told reporters.
He said he has long opposed such backdoors where the firm may use chips to obtain secrets from customers.
"It's not a good sign when companies have to open their systems for some kind of secret services," he said.
Meng is the daughter of Huawei founder Ren Zhengfei. Her arrest sparked a surge of patriotism in China with companies encouraging staff to buy Huawei smartphones.
Huawei in December said it expects to see a 21 percent rise in revenue for 2018 despite what it called "unfair treatment" around the world.
Last year the company also said it had signed memorandums of understanding for 5G equipment with 45 operators in Asia, Europe and North America.